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The second achievement date occurred on February 28, 2025, as certified by the compensation committee of ATEN, resulting in 10,125 units meeting the\nappropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on March 10, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of February 28, 2025, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"PSUs that were previously reported on February 22, 2023, each of which represents a contingent right to receive one share of common stock of ATEN, with\nvesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between\nFebruary 21, 2023 and February 21, 2027. The second achievement date occurred on February 28, 2025, as certified by the compensation committee of ATEN, resulting in 10,125 units meeting the\nappropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on March 10, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of February 28, 2025, subject to continued employment. These shares are reflected on Table I."}],"balance_after":0,"derivative":{"expiration_date":"2027-02-21","underlying":"Common Stock","underlying_shares":10125},"source":{"system":"sec-edgar","filing":"0001580808-25-000053","document":"wk-form4_1741742800.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000053/wk-form4_1741742800.xml","form_type":"4"}},{"id":1211594,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Performance-based Restricted Stock Units","published_at":"2025-03-12T01:26:46.000Z","date":"2025-03-10","kind":"exercise","planned":false,"acquired":false,"shares":7306,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-Based Restricted Stock (\"PSUs\") Units were previously reported on January 27, 2022, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 25, 2022 and January 25, 2026. The third achievement date occurred on February 24, 2025, as certified by the compensation committee of ATEN, resulting in 7,306 units meeting the appropriate performance-based conditions.  However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on March 10, 2025 and an additional one-third (1/3) to vest on the each of the first and second anniversaries of February 24, 2025, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock (\"PSUs\") Units were previously reported on January 27, 2022, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 25, 2022 and January 25, 2026. The third achievement date occurred on February 24, 2025, as certified by the compensation committee of ATEN, resulting in 7,306 units meeting the appropriate performance-based conditions.  However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on March 10, 2025 and an additional one-third (1/3) to vest on the each of the first and second anniversaries of February 24, 2025, subject to continued employment. These shares are reflected on Table I."}],"balance_after":0,"derivative":{"exercise_price":0,"expiration_date":"2026-01-25","underlying":"Common Stock","underlying_shares":7306},"source":{"system":"sec-edgar","filing":"0001580808-25-000053","document":"wk-form4_1741742800.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000053/wk-form4_1741742800.xml","form_type":"4"}},{"id":1211593,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-03-12T01:26:46.000Z","date":"2025-03-11","kind":"tax_withholding","planned":false,"acquired":false,"shares":3807,"price":19.38,"value":73779.66,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Includes 1,237 shares automatically withheld, on a non-discretionary basis, for tax purposes related to a January 25, 2022 performance restricted stock unit grant, and 2,570 shares automatically\nwithheld, on a non-discretionary basis, for tax purposes related to a February 21, 2023 performance restricted stock unit grant, each that vested on March 10, 2025."}],"balance_after":83999,"source":{"system":"sec-edgar","filing":"0001580808-25-000053","document":"wk-form4_1741742800.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000053/wk-form4_1741742800.xml","form_type":"4"}},{"id":1211592,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-03-12T01:26:46.000Z","date":"2025-03-10","kind":"exercise","planned":false,"acquired":true,"shares":10125,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"PSUs that were previously reported on February 22, 2023, each of which represents a contingent right to receive one share of common stock of ATEN, with\nvesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between\nFebruary 21, 2023 and February 21, 2027. 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The third achievement date occurred on February 24, 2025, as certified by the compensation committee of ATEN, resulting in 7,306 units meeting the appropriate performance-based conditions.  However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on March 10, 2025 and an additional one-third (1/3) to vest on the each of the first and second anniversaries of February 24, 2025, subject to continued employment. 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The second milestone achievement date occurred on February 10, 2025, as certified by the compensation committee of ATEN, resulting in 7,307 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on February 20, 2025 and an additional one-third (1/3) on each of the first and second anniversaries of February 10, 2025, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 27, 2022, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 25, 2022 and January 25, 2026. The second milestone achievement date occurred on February 10, 2025, as certified by the compensation committee of ATEN, resulting in 7,307 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on February 20, 2025 and an additional one-third (1/3) on each of the first and second anniversaries of February 10, 2025, subject to continued employment. 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The second milestone achievement date occurred on February 10, 2025, as certified by the compensation committee of ATEN, resulting in 7,307 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on February 20, 2025 and an additional one-third (1/3) on each of the first and second anniversaries of February 10, 2025, subject to continued employment. 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The first achievement date occurred on January 31, 2025, as certified by the compensation committee of ATEN, resulting in 10,126 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on February 13, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 31, 2025, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units that were previously reported on February 22, 2023, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 21, 2023 and February 21, 2027. The first achievement date occurred on January 31, 2025, as certified by the compensation committee of ATEN, resulting in 10,126 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on February 13, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 31, 2025, subject to continued employment. These shares are reflected on Table I."}],"balance_after":10125,"derivative":{"expiration_date":"2027-02-21","underlying":"Common Stock","underlying_shares":10126},"source":{"system":"sec-edgar","filing":"0001580808-25-000029","document":"wk-form4_1739929311.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000029/wk-form4_1739929311.xml","form_type":"4"}},{"id":1263280,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-02-19T01:41:58.000Z","date":"2025-02-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":2570,"price":21.68,"value":55717.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares automatically withheld, on a non-discretionary basis, for tax purposes related to a February 21, 2023 performance restricted stock unit grant that vested on February 13, 2025."}],"balance_after":64305,"source":{"system":"sec-edgar","filing":"0001580808-25-000029","document":"wk-form4_1739929311.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000029/wk-form4_1739929311.xml","form_type":"4"}},{"id":1263279,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-02-19T01:41:58.000Z","date":"2025-02-13","kind":"exercise","planned":false,"acquired":true,"shares":10126,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance-Based Restricted Stock Units that were previously reported on February 22, 2023, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 21, 2023 and February 21, 2027. The first achievement date occurred on January 31, 2025, as certified by the compensation committee of ATEN, resulting in 10,126 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on February 13, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 31, 2025, subject to continued employment. 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Once a milestone is met, vesting is subject to continued employment with the Company through the applicable vesting date, the first fifty percent (50%) of which will occur within thirty (30) days of achievment of the applicable milestone and the balance to vest twenty-five percent (25%) on each of the first and second anniversaries of achievement of the corresponding performance milestone."}],"balance_after":13587,"derivative":{"expiration_date":"2029-02-06","underlying":"Common Stock","underlying_shares":13587},"source":{"system":"sec-edgar","filing":"0001580808-25-000023","document":"wk-form4_1739224907.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000023/wk-form4_1739224907.xml","form_type":"4"}},{"id":1276091,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-02-10T22:01:54.000Z","date":"2025-02-06","kind":"grant","planned":false,"acquired":true,"shares":13587,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each share is represented by a Restricted Stock Unit (\"RSU\"). One-third (1/3) of the total RSUs will vest on each of the first three (3) anniversaries of the Vesting Commencement Date (2/1/2025),\nprovided that the Reporting Person continues to serve through each such vesting date."}],"balance_after":56749,"source":{"system":"sec-edgar","filing":"0001580808-25-000023","document":"wk-form4_1739224907.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000023/wk-form4_1739224907.xml","form_type":"4"}},{"id":1283779,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-02-04T22:28:52.000Z","date":"2025-02-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":6740,"price":19.61,"value":132171.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares automatically withheld, on a non-discretionary basis, for tax purposes related to restricted stock units granted on January 25, 2022, February 21, 2023 and January 30, 2024, each of which vested on February 1, 2025."}],"balance_after":43162,"source":{"system":"sec-edgar","filing":"0001580808-25-000018","document":"wk-form4_1738708125.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000018/wk-form4_1738708125.xml","form_type":"4"}},{"id":1294276,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Performance-based Restricted Stock Units","published_at":"2025-01-27T23:29:56.000Z","date":"2025-01-23","kind":"exercise","planned":false,"acquired":false,"shares":12702,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The second milestone achievement date occurred on January 15, 2025, as certified by the compensation committee of ATEN, resulting in 12,702 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on January 23, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 15, 2025, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The second milestone achievement date occurred on January 15, 2025, as certified by the compensation committee of ATEN, resulting in 12,702 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on January 23, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 15, 2025, subject to continued employment. These shares are reflected on Table I."}],"balance_after":0,"derivative":{"expiration_date":"2028-01-30","underlying":"Common Stock","underlying_shares":12702},"source":{"system":"sec-edgar","filing":"0001580808-25-000008","document":"wk-form4_1738020589.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000008/wk-form4_1738020589.xml","form_type":"4"}},{"id":1294275,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-01-27T23:29:56.000Z","date":"2025-01-24","kind":"tax_withholding","planned":false,"acquired":false,"shares":4926,"price":19.46,"value":95859.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares automatically withheld, on a non-discretionary basis, for tax purposes related to a January 25, 2022 performance restricted stock unit grant and a January 30, 2024 performance restricted stock unit grant that each vested on January 23, 2025."}],"balance_after":49902,"source":{"system":"sec-edgar","filing":"0001580808-25-000008","document":"wk-form4_1738020589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000008/wk-form4_1738020589.xml","form_type":"4"}},{"id":1294274,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2025-01-27T23:29:56.000Z","date":"2025-01-23","kind":"exercise","planned":false,"acquired":true,"shares":12702,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The second milestone achievement date occurred on January 15, 2025, as certified by the compensation committee of ATEN, resulting in 12,702 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on January 23, 2025 and an additional one-fourth (1/4) on each of the first and second anniversaries of January 15, 2025, subject to continued employment. These shares are reflected on Table I."}],"balance_after":54828,"source":{"system":"sec-edgar","filing":"0001580808-25-000008","document":"wk-form4_1738020589.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080825000008/wk-form4_1738020589.xml","form_type":"4"}},{"id":1320283,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Performance-based Restricted Stock Units","published_at":"2024-12-31T01:11:28.000Z","date":"2024-12-26","kind":"exercise","planned":false,"acquired":false,"shares":12703,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The first achievement date occurred on December 13, 2024, as certified by the compensation committee of ATEN, resulting in 12,703 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on December 26, 2024 and an additional one-fourth (1/4) on each of the first and second anniversaries of December 13, 2024, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The first achievement date occurred on December 13, 2024, as certified by the compensation committee of ATEN, resulting in 12,703 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on December 26, 2024 and an additional one-fourth (1/4) on each of the first and second anniversaries of December 13, 2024, subject to continued employment. These shares are reflected on Table I."}],"balance_after":12702,"derivative":{"expiration_date":"2028-01-30","underlying":"Common Stock","underlying_shares":12703},"source":{"system":"sec-edgar","filing":"0001580808-24-000136","document":"wk-form4_1735607482.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080824000136/wk-form4_1735607482.xml","form_type":"4"}},{"id":1320282,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2024-12-31T01:11:28.000Z","date":"2024-12-26","kind":"tax_withholding","planned":false,"acquired":false,"shares":3218,"price":18.81,"value":60530.58,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares automatically withheld, on a non-discretionary basis, for tax purposes related to January 30, 2024 performance restricted stock unit grant that vested on December 26, 2024."}],"balance_after":42126,"source":{"system":"sec-edgar","filing":"0001580808-24-000136","document":"wk-form4_1735607482.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080824000136/wk-form4_1735607482.xml","form_type":"4"}},{"id":1320281,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2024-12-31T01:11:28.000Z","date":"2024-12-26","kind":"exercise","planned":false,"acquired":true,"shares":12703,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on January 31, 2024, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between January 30, 2024 and January 30, 2028. The first achievement date occurred on December 13, 2024, as certified by the compensation committee of ATEN, resulting in 12,703 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-half (1/2) on December 26, 2024 and an additional one-fourth (1/4) on each of the first and second anniversaries of December 13, 2024, subject to continued employment. 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Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."}],"balance_after":34252,"source":{"system":"sec-edgar","filing":"0001580808-24-000043","document":"wk-form4_1708040242.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080824000043/wk-form4_1708040242.xml","form_type":"4"}},{"id":1656491,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2024-02-06T22:44:16.000Z","date":"2024-02-05","kind":"sale","planned":true,"acquired":false,"shares":2047,"price":13.06,"value":26733.82,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This is the weighted average price of the shares sold, which ranged from $13.06 to $13.11 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."}],"balance_after":49252,"source":{"system":"sec-edgar","filing":"0001580808-24-000039","document":"wk-form4_1707259447.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080824000039/wk-form4_1707259447.xml","form_type":"4"}},{"id":1656490,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2024-02-06T22:44:16.000Z","date":"2024-02-02","kind":"sale","planned":true,"acquired":false,"shares":2564,"price":13.21,"value":33870.44,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This is the weighted average price of the shares sold, which ranged from $13.19 to $13.21 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."}],"balance_after":51299,"source":{"system":"sec-edgar","filing":"0001580808-24-000039","document":"wk-form4_1707259447.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080824000039/wk-form4_1707259447.xml","form_type":"4"}},{"id":1656489,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2024-02-06T22:44:16.000Z","date":"2024-02-02","kind":"sale","planned":true,"acquired":false,"shares":1784,"price":13.21,"value":23566.64,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This is the weighted average price of the shares sold, which ranged from $13.19 to $13.21 per share. 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The second milestone achievement date occurred on August 17, 2021, as certified by the compensation committee of ATEN on August 19, 2021, resulting in 9,315 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 30, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of August 17, 2021, subject to continued employment. These shares are reflected on Table I."}],"balance_after":62688,"source":{"system":"sec-edgar","filing":"0001580808-21-000136","document":"wf-form4_162950313795545.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000136/wf-form4_162950313795545.xml","form_type":"4"}},{"id":2597277,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2021-08-18T22:31:33.000Z","date":"2021-08-17","kind":"sale","acquired":false,"shares":390,"price":13.48,"value":5257.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units."}],"balance_after":53373,"source":{"system":"sec-edgar","filing":"0001580808-21-000128","document":"wf-form4_162932587576058.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000128/wf-form4_162932587576058.xml","form_type":"4"}},{"id":2605003,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Performance-based Restricted Stock Units","published_at":"2021-08-12T20:02:52.000Z","date":"2021-08-10","kind":"exercise","acquired":false,"shares":3334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between  October 19, 2020 and  October 19, 2024. The achievement of the last milestone occurred on August 5, 2021, as certified by the compensation committee on August 10, 2021, resulting in 3,334 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 16, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of August 5, 2021, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between  October 19, 2020 and  October 19, 2024. The achievement of the last milestone occurred on August 5, 2021, as certified by the compensation committee on August 10, 2021, resulting in 3,334 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 16, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of August 5, 2021, subject to continued employment. These shares are reflected on Table I."}],"balance_after":0,"derivative":{"expiration_date":"2024-10-19","underlying":"Common Stock","underlying_shares":3334},"source":{"system":"sec-edgar","filing":"0001580808-21-000121","document":"wf-form4_162879855932155.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000121/wf-form4_162879855932155.xml","form_type":"4"}},{"id":2605002,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Performance-based Restricted Stock Units","published_at":"2021-08-12T20:02:52.000Z","date":"2021-08-02","kind":"exercise","acquired":false,"shares":9314,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between  February 2, 2021 and  February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 9,314 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between  February 2, 2021 and  February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 9,314 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I."}],"balance_after":18630,"derivative":{"expiration_date":"2025-02-02","underlying":"Common Stock","underlying_shares":9314},"source":{"system":"sec-edgar","filing":"0001580808-21-000121","document":"wf-form4_162879855932155.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000121/wf-form4_162879855932155.xml","form_type":"4"}},{"id":2605001,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2021-08-12T20:02:52.000Z","date":"2021-08-10","kind":"sale","acquired":false,"shares":1082,"price":13.34,"value":14433.88,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units."}],"balance_after":53763,"source":{"system":"sec-edgar","filing":"0001580808-21-000121","document":"wf-form4_162879855932155.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000121/wf-form4_162879855932155.xml","form_type":"4"}},{"id":2605000,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2021-08-12T20:02:52.000Z","date":"2021-08-10","kind":"exercise","acquired":true,"shares":3334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between  October 19, 2020 and  October 19, 2024. The achievement of the last milestone occurred on August 5, 2021, as certified by the compensation committee on August 10, 2021, resulting in 3,334 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 16, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of August 5, 2021, subject to continued employment. These shares are reflected on Table I."}],"balance_after":54845,"source":{"system":"sec-edgar","filing":"0001580808-21-000121","document":"wf-form4_162879855932155.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000121/wf-form4_162879855932155.xml","form_type":"4"}},{"id":2604999,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2021-08-12T20:02:52.000Z","date":"2021-08-02","kind":"exercise","acquired":true,"shares":9314,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on February 4, 2021, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between  February 2, 2021 and  February 2, 2025. The achievement of the first milestone occurred on July 30, 2021, as certified by the compensation committee August 2, 2021, resulting in 9,314 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third (1/3) on August 9, 2021 and an additional one-third (1/3) on each of the first and second anniversaries of July 30, 2021, subject to continued employment. These shares are reflected on Table I."}],"balance_after":51511,"source":{"system":"sec-edgar","filing":"0001580808-21-000121","document":"wf-form4_162879855932155.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000121/wf-form4_162879855932155.xml","form_type":"4"}},{"id":2608101,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2021-08-10T21:04:48.000Z","date":"2021-08-06","kind":"sale","acquired":false,"shares":1624,"price":13.1765,"value":21398.636,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase Plan."}],"balance_after":42197,"source":{"system":"sec-edgar","filing":"0001580808-21-000116","document":"wf-form4_162862947400572.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000116/wf-form4_162862947400572.xml","form_type":"4"}},{"id":2769056,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2021-03-29T22:25:45.000Z","date":"2021-03-26","kind":"sale","acquired":false,"shares":389,"price":9.34,"value":3633.26,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units."}],"balance_after":43392,"source":{"system":"sec-edgar","filing":"0001580808-21-000060","document":"wf-form4_161705672781305.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000060/wf-form4_161705672781305.xml","form_type":"4"}},{"id":2771660,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Performance-based Restricted Stock Units","published_at":"2021-03-25T21:49:30.000Z","date":"2021-03-23","kind":"exercise","acquired":false,"shares":3333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I."}],"balance_after":3334,"derivative":{"expiration_date":"2024-10-19","underlying":"Common Stock","underlying_shares":3333},"source":{"system":"sec-edgar","filing":"0001580808-21-000052","document":"wf-form4_161670895598442.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000052/wf-form4_161670895598442.xml","form_type":"4"}},{"id":2771659,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2021-03-25T21:49:30.000Z","date":"2021-03-23","kind":"exercise","acquired":true,"shares":3333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The second achievement date occurred on March 12, 2021, as certified by the compensation committee of ATEN on March 23, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I."}],"balance_after":43781,"source":{"system":"sec-edgar","filing":"0001580808-21-000052","document":"wf-form4_161670895598442.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000052/wf-form4_161670895598442.xml","form_type":"4"}},{"id":2781053,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2021-03-17T22:29:40.000Z","date":"2021-03-08","kind":"sale","acquired":false,"shares":8085,"price":9.21,"value":74462.85,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This is the weighted average price of the shares sold, which ranged from $9.20 to $9.21 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."}],"balance_after":40448,"source":{"system":"sec-edgar","filing":"0001580808-21-000050","document":"wf-form4_161602012554219.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000050/wf-form4_161602012554219.xml","form_type":"4"}},{"id":2845533,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Interim CFO"}}],"security":"Common Stock","published_at":"2021-02-20T01:10:42.000Z","date":"2021-02-19","kind":"sale","acquired":false,"shares":1011,"price":9.2,"value":9301.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This is the weighted average price of the shares sold, which ranged from $8.97 to $9.34 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes shares acquired by the Reporting Person pursuant to the Issuer's Employee Stock Purchase Plan."}],"balance_after":48533,"source":{"system":"sec-edgar","filing":"0001580808-21-000036","document":"wf-form4_161378342281369.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000036/wf-form4_161378342281369.xml","form_type":"4"}},{"id":2878762,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Interim CFO"}}],"security":"Performance-based Restricted Stock Units","published_at":"2021-02-05T00:12:57.000Z","date":"2021-02-02","kind":"exercise","acquired":false,"shares":3333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I."}],"balance_after":6667,"derivative":{"expiration_date":"2024-10-19","underlying":"Common Stock","underlying_shares":3333},"source":{"system":"sec-edgar","filing":"0001580808-21-000018","document":"wf-form4_161248396282362.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000018/wf-form4_161248396282362.xml","form_type":"4"}},{"id":2878761,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Interim CFO"}}],"security":"Performance-based Restricted Stock Units","published_at":"2021-02-05T00:12:57.000Z","date":"2021-02-02","kind":"exercise","acquired":false,"shares":3250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Performance-Based Restricted Stock Units were previously reported on September 25, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 20, 2020 and July 20, 2024. The achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,250 units meeting the appropriate performance-based conditions. These shares will therefore vest as to one-half within thirty (30) days of the date of achievement of the milestone with an additional one-fourth on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Performance-Based Restricted Stock Units were previously reported on September 25, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 20, 2020 and July 20, 2024. The achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,250 units meeting the appropriate performance-based conditions. These shares will therefore vest as to one-half within thirty (30) days of the date of achievement of the milestone with an additional one-fourth on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I."}],"balance_after":0,"derivative":{"expiration_date":"2024-07-20","underlying":"Common Stock","underlying_shares":3250},"source":{"system":"sec-edgar","filing":"0001580808-21-000018","document":"wf-form4_161248396282362.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000018/wf-form4_161248396282362.xml","form_type":"4"}},{"id":2878760,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Interim CFO"}}],"security":"Performance-based Restricted Stock Units","published_at":"2021-02-05T00:12:57.000Z","date":"2021-02-02","kind":"grant","acquired":true,"shares":27944,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each share is represented by a Performance-based Restricted Stock Unit (\"PSU\")"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Grant of 27,944 Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between February 2, 2021 and February 2, 2025 (each, a \"Performance Milestone\"). Upon achievement of a Performance Milestone, vesting is subject to continued employment with the Company through the applicable vesting date, which occurs in three equal installments with the first vesting to occur within thirty (30) days of achievement of the Performance Milestone and an additional one-third (1/3) on each of the first and second anniversaries of the date of achievement of the corresponding Performance Milestone."}],"balance_after":27944,"derivative":{"expiration_date":"2025-02-02","underlying":"Common Stock","underlying_shares":27944},"source":{"system":"sec-edgar","filing":"0001580808-21-000018","document":"wf-form4_161248396282362.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000018/wf-form4_161248396282362.xml","form_type":"4"}},{"id":2878759,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Interim CFO"}}],"security":"Common Stock","published_at":"2021-02-05T00:12:57.000Z","date":"2021-02-02","kind":"exercise","acquired":true,"shares":3333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Performance-Based Restricted Stock Units were previously reported on October 21, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between October 19, 2020 and October 19, 2024. The first achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,333 units meeting the appropriate performance-based conditions. However, these shares remain subject to time-based vesting conditions and will therefore vest as to one-third within 30 days of achievement of the milestone and an additional one-third on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I."}],"balance_after":49087,"source":{"system":"sec-edgar","filing":"0001580808-21-000018","document":"wf-form4_161248396282362.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000018/wf-form4_161248396282362.xml","form_type":"4"}},{"id":2878758,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Interim CFO"}}],"security":"Common Stock","published_at":"2021-02-05T00:12:57.000Z","date":"2021-02-02","kind":"exercise","acquired":true,"shares":3250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Performance-Based Restricted Stock Units were previously reported on September 25, 2020, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day trading period between July 20, 2020 and July 20, 2024. The achievement date occurred on January 28, 2021, as certified by the compensation committee of ATEN on February 2, 2021, resulting in 3,250 units meeting the appropriate performance-based conditions. These shares will therefore vest as to one-half within thirty (30) days of the date of achievement of the milestone with an additional one-fourth on each of the first and second anniversaries of achievement of the milestone, subject to continued employment. These shares are reflected on Table I."}],"balance_after":45754,"source":{"system":"sec-edgar","filing":"0001580808-21-000018","document":"wf-form4_161248396282362.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000018/wf-form4_161248396282362.xml","form_type":"4"}},{"id":2878757,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Interim CFO"}}],"security":"Common Stock","published_at":"2021-02-05T00:12:57.000Z","date":"2021-02-02","kind":"grant","acquired":true,"shares":11976,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each share is represented by a Restricted Stock Unit (\"RSU\"). One-third (1/3) of the total RSUs will vest on each of the first three (3) anniversaries of the date of grant, provided that the Reporting Person continues to serve through each vesting date."}],"balance_after":42504,"source":{"system":"sec-edgar","filing":"0001580808-21-000018","document":"wf-form4_161248396282362.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000018/wf-form4_161248396282362.xml","form_type":"4"}},{"id":2911813,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Interim CFO"}}],"security":"Common Stock","published_at":"2021-01-08T21:06:10.000Z","date":"2021-01-06","kind":"sale","acquired":false,"shares":4222,"price":9.64,"value":40700.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents the number of shares automatically sold, on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units."}],"balance_after":30528,"source":{"system":"sec-edgar","filing":"0001580808-21-000002","document":"wf-form4_161013995374695.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080821000002/wf-form4_161013995374695.xml","form_type":"4"}},{"id":3001922,"issuer":{"id":4574,"kind":"organization","name":"A10 Networks, Inc.","symbol":"ATEN"},"owners":[{"id":76500,"kind":"person","name":"Becker Brian","position":1,"cik":"0001826095","reported_name":"Becker Brian","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Interim CFO"}}],"security":"Performance-based Restricted Stock Units","published_at":"2020-10-21T20:26:48.000Z","date":"2020-10-19","kind":"grant","acquired":true,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share is represented by a Performance-based Restricted Stock Unit (\"PSU\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Grant of 10,000 Performance-Based Restricted Stock Units, each of which represents a contingent right to receive one share of common stock of ATEN, with vesting subject to the achievement of specified levels of the volume weighted average closing prices of a share of ATEN common stock during any one hundred (100) day period between October 19, 2020 and October 19, 2024. Vesting is subject to continued employment with the Company through the applicable vesting date, which occurs in three equal annual installments beginning on the date of achievement of the milestone and the balance on each of the first and second anniversaries of the corresponding performance milestone."}],"balance_after":13250,"derivative":{"expiration_date":"2024-10-19","underlying":"Common Stock"},"source":{"system":"sec-edgar","filing":"0001580808-20-000107","document":"wf-form4_160331199390554.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1580808/000158080820000107/wf-form4_160331199390554.xml","form_type":"4"}}]}